*{
	margin:0px;
	padding:0px;
}
html,body{
	width:100%;
	font-size:12px;
	background: #f5f5f5;
}
.head{
	position:relative;
	width:1000px;
	height:200px;
	margin:0px auto;
	background:url("../image/head_1.jpg");
	background-size: "1000px 200px";
	
}
.logo{
	position: absolute;
	width:200px;
	height:50px;
	top:29px;
	left:63px;
	/*background-color: pink;*/
}
.icon_logo {
   width: 4em; 
   height: 4em;
   vertical-align: -0.15em;
   fill: currentColor;
   overflow: hidden;
   color:#fff;
}
.logo_font{
	font-size:26px;
	line-height:50px;
	vertical-align: top;
	color:#fff;
}
.nav_bar{	
	width:1000px;
	height:45px;
	margin:0px auto;
	margin-top:3px;
	list-style: none;
	background-color:#00805b;
}
.nav_bar_li{
	position: relative;
	float:left;
	width:9.09%;
	height:100%;
}
.nav_bar_li a{
	display:block;
	width:100%;
	height:100%;
	text-decoration: none;
	color:#fff;
	font-size:16px;
	line-height:45px;
	text-align: center;
	transition:all 0.3s;
}
.nav_bar_li a:hover{
	background-color:#438764 ;/*#21b26d*/
}
.icon_down{
   width: 1em; 
   height: 1em;
   vertical-align: -0.15em;
   margin-left:-4px;
   fill: currentColor;
   overflow: hidden;
}
.down_ul{
	position: absolute;
	z-index:10;
	top:45px;
	left:0px;
	width:100%;
	height:0px;
	background-color:#00ad7b;
	list-style: none;
	overflow: hidden;
	transition: height 0.3s;
}
.down_ul_li{
	width:100%;
	height:45px;
}
.base_mes_li:hover .base_mes_down{
	height:90px;	
}
.base_mes_icon,.plant_icon{
	transition: transform 0.5s;
}
.base_mes_li:hover .base_mes_icon,.plant_li:hover .plant_icon{
	transform: rotate(90deg);
}
.plant_li:hover .plant_down{
	height:90px;
}
.footer{
	width:1000px;
	height:40px;
	margin:0px auto;
	margin-top:20px;
	border-radius: 5px;
	background: -webkit-linear-gradient(left,rgb(69,146,88),rgb(8,175,167));
	background: -moz-linear-gradient(left,rgb(69,146,88),rgb(8,175,167));
	background: -o-linear-gradient(left,rgb(69,146,88),rgb(8,175,167));
	background: linear-gradient(left,rgb(69,146,88),rgb(8,175,167));
}
.footer_box{
	width:160px;
	height:100%;
	margin:0px auto;
}
.footer_box span{
	line-height:40px;
	text-align: center;
	color:#fff;
	cursor: pointer;
}
.footer_box span:hover{
	text-decoration: underline;
}
.footer_box span:first-child{
	float:left;
}
.footer_box span:last-child{
	float:right;
}